I shudder at the thought of drip systems... I've watched to many fish die from them to ever even consider it. That's my take on it... If you are going to use it, be careful.

The fish that died had no symptoms- internal (I performed a necropsy), external, or behavioral. Over a period of a couple of weeks they just began to drop dead... I can only assume that it was compounds from the plastic breaking down.

Putting zebra danios in a one gallon container is not a good idea...

"Plastic breaking down" - but what about people who use filter baffles?

I shudder at the thought of drip systems... I've watched to many fish die from them to ever even consider it. That's my take on it... If you are going to use it, be careful.

The fish that died had no symptoms- internal (I performed a necropsy), external, or behavioral. Over a period of a couple of weeks they just began to drop dead... I can only assume that it was compounds from the plastic breaking down.

I hope that link works. If not just youtube betta drip system, and there's plenty of videos out there. The concern on using drip systems I believe is that the drip lines can hold and grow bad fungus and bacteria, and if one fish gets sick in the system, they all have the chance of getting it. Kind of like a community tank with a wet dry filter or canister filter.

"Plastic" is a very broad term. Generally, plastics can be classified into seven different types... 1,2,3,4,5,6, and 7... It's usually on most plastic containers.Attachment 215794
They all break down differently.

These containers are marked with a 1, from doing some research, 1 is said not to leach, and it's what is also used in bottled water. Next step is to put a fish in it and try it I guess.